[INFO] fetching crate cow_struct 0.0.1...
[INFO] testing cow_struct-0.0.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate cow_struct 0.0.1 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate cow_struct 0.0.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cow_struct 0.0.1
[INFO] finished tweaking crates.io crate cow_struct 0.0.1
[INFO] tweaked toml for crates.io crate cow_struct 0.0.1 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18675dd74ef74282424c667626bf1b859dfd6c5e228f9e63c66aea382773c8dc
[INFO] running `Command { std: "docker" "start" "-a" "18675dd74ef74282424c667626bf1b859dfd6c5e228f9e63c66aea382773c8dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18675dd74ef74282424c667626bf1b859dfd6c5e228f9e63c66aea382773c8dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18675dd74ef74282424c667626bf1b859dfd6c5e228f9e63c66aea382773c8dc", kill_on_drop: false }`
[INFO] [stdout] 18675dd74ef74282424c667626bf1b859dfd6c5e228f9e63c66aea382773c8dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a595be14696c8f2d4d8889b1d1cb9f2c536669111ebeafed0eb4fa56d3ff3f5
[INFO] running `Command { std: "docker" "start" "-a" "8a595be14696c8f2d4d8889b1d1cb9f2c536669111ebeafed0eb4fa56d3ff3f5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling cow_struct v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.42s
[INFO] running `Command { std: "docker" "inspect" "8a595be14696c8f2d4d8889b1d1cb9f2c536669111ebeafed0eb4fa56d3ff3f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a595be14696c8f2d4d8889b1d1cb9f2c536669111ebeafed0eb4fa56d3ff3f5", kill_on_drop: false }`
[INFO] [stdout] 8a595be14696c8f2d4d8889b1d1cb9f2c536669111ebeafed0eb4fa56d3ff3f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38834dd1384318c767ff55062342a94681e657066244fb22656ca917907f901e
[INFO] running `Command { std: "docker" "start" "-a" "38834dd1384318c767ff55062342a94681e657066244fb22656ca917907f901e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cow_struct v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `f`
[INFO] [stdout]  --> tests/struct.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         f: [u8; 16],
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Nested` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> tests/struct.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 |     #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |              ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "38834dd1384318c767ff55062342a94681e657066244fb22656ca917907f901e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38834dd1384318c767ff55062342a94681e657066244fb22656ca917907f901e", kill_on_drop: false }`
[INFO] [stdout] 38834dd1384318c767ff55062342a94681e657066244fb22656ca917907f901e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ccd5bbf8a9db8c3c3f087db73a1e1921a33ac6fab805cc3df7153cd0f16639ee
[INFO] running `Command { std: "docker" "start" "-a" "ccd5bbf8a9db8c3c3f087db73a1e1921a33ac6fab805cc3df7153cd0f16639ee", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `f`
[INFO] [stderr]  --> tests/struct.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |         f: [u8; 16],
[INFO] [stderr]   |         ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Nested` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> tests/struct.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 |     #[derive(Debug, Default, Clone)]
[INFO] [stderr]   |              ^^^^^           ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `cow_struct` (test "struct") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running tests/struct.rs (/opt/rustwide/target/debug/deps/struct-655ff69315fe12cc)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::derive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cow_struct
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ccd5bbf8a9db8c3c3f087db73a1e1921a33ac6fab805cc3df7153cd0f16639ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccd5bbf8a9db8c3c3f087db73a1e1921a33ac6fab805cc3df7153cd0f16639ee", kill_on_drop: false }`
[INFO] [stdout] ccd5bbf8a9db8c3c3f087db73a1e1921a33ac6fab805cc3df7153cd0f16639ee